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Sanitary Sewer Overflow Response Standard Operating Procedures

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Sanitary Sewer Overflow Response Standard Operating Procedures This Page Intentionally Left Blank Sanitary Sewer Overflow Response Standard Operating Procedures FEBRUARY 2016 Effective date: SANITARY SEWER OVERFLOW REPONSE SOP February 2016 ADMINISTRATIVE A. Introduction 1. This SOP is a set of guidelines to aid Operations & Maintenance staff responding to sanitary sewer overflows (SSOs). All activities shall be conducted safely, in accordance with all CalOSHA and City of Hayward regulations to minimize the chance of personnel injury, or adverse impact on the environment, in compliance with all regulatory agency standards, and in a way that maximizes operational and production requirements. B. References 1. Ken Kerry. Operation and Maintenance of Wastewater Collection System. Office of Wastewater Programs Volume 1. CSU Sacramento. 2004. p. 554 2. California Integrated Water Quality System (CIWQS) SSO Discharger Work Book. 3. Bay Area Clean Water Agencies (BACWA) Best Management Practices for Sanitary Sewer Overflow Reduction Strategies. 4. City of Hayward Municipal Code, Article 3 – “SANITARY SEWER SYSTEM”. 5. State Water Resources Control Board Order No. 2013-0058-EXEC Amending Monitoring and Reporting Program for Statewide General Waste Discharge Requirements for Sanitary Sewer Systems. 6. State Water Resources Control Board Monitoring and Reporting Program No. 2006-003 Statewide General Waste Discharge Requirements for Sanitary Sewer Systems. 7. City of Hayward Sewer System Management Plan (SSMP). C. Objectives 1. Provide Operations & Maintenance staff with a set of formal instructions to be utilized to: a. Correctly respond to a Sanitary Sewer Overflow (SSO). b. Accurately estimate the volume of an SSO. c. Implement best management practices (BMPs) to stop an overflow, and remediate and control the effects of an SSO. d. Sample waters that may be affected or impacted by an SSO. e. Clean up an SSO. D. Equipment/Personnel Required 1. Personnel – Two Collection System Utility Workers (minimum), but as many as required to safely and effectively stop the SSO, prevent the SSO from impacting 3 Effective date: SANITARY SEWER OVERFLOW REPONSE SOP February 2016 surface waters or storm drains, mitigate the effects of the SSO, including sampling surface waters that may be impacted, and clean up effects of the SSO. 2. PPE – Hard hat, gloves, steel-toe safety shoes, respiratory protection, eye protection, face shield, hearing protection, safety vest. 3. Equipment – Emergency Response Equipment: Combo-truck, pumps, hoses, generator, lights, traffic control, safety equipment, etc. E. Definitions 1. BACWA – Bay Area Clean Water Agencies. 2. BMP – Best Management Practices for responding to, mitigating, and cleaning up spills. Refers to procedures for responding to an SSO that minimize damage and impact of SSO. For details of these procedures, refer to the following manuals. a. Best Management Practices for Sanitary Sewer Overflow (SSO) Reduction Strategies – Bay Area Clean Water Agencies (BACWA) b. Best Practices for Sanitary Sewer Overflow Prevention and Response Plan – Collection System Collaborative Benchmarkng Group. 3. CalEMA – California Emergency Management Agency. 4. CalOES (formerly CalEMA) – California Office of Emergency Services 5. Cal OSHA – California Occupational Health and Safety Agency 6. CIWQS – California Integrated Water Quality System, online SSO reporting database. 7. CWQCB – California Water Quality Control Board or Water Board 8. SSO – Sanitary Sewer Overflow 9. WQMP – SSO Water Quality Monitoring Plan, instructions on water sampling, required if spill volume equals or exceeds 50,000 gallons. F. Terminology 1. NOTE is used when information is available that can assist the Operator in accomplishing his or her task. Information is advisory in nature. 2. CAUTION is used when special cautions must be taken by the Operator. Failure to following prescribed steps may cause serious bodily injury and damage equipment. 3. WARNING is used when special cautions must be taken by the Operator. Failure to follow prescribed steps will cause loss of life or limb and severely damage equipment. 4 Effective date: SANITARY SEWER OVERFLOW REPONSE SOP February 2016 PROCEDURES 1. SSO Response NOTE Detailed steps for activities listed in PROCEDURES are in following sections. Refer to these sections for detailed descriptions of activities. 1.1 Determine source of the SSO. Step 1: Contact caller and get info on spill; location, start time, etc. Step 2: Determine if spill caused by blockage, equipment failure, or damage to sewer system. 1.2 Take action to stop the SSO. Step 1: Locate the point of discharge. Step 2: Determine cause of spill. Step 3: Develop plan to and take action necessary to stop the SSO. Step 4: If necessary, call out enough personnel to control spill. 1.3 Take action to contain spill. Step 1: Determine extent of spill and containment necessary. Step 2: Block all entry points to storm drain, creeks, lakes, or any other access to waters of the state. Step 3: If necessary, use pneumatic plugs to block storm drain system and prevent spill from traveling any further in the storm drain system. Step 4: Use combo-truck to rinse and clean storm drain system and return captured sewage to the sanitary sewer system. 1.4 Document Activity Step 1: Estimate volume of spill. Step 2: Determine percentage of spill recovered. Step 3: It is important to take photos throughout the response process to document the event. Photograph any evidence of spill volume, extent or severity. 1.5 Report Step 1: Fill out the Sanitary Sewer Overflow Data Form as completely as possible. 5 Effective date: SANITARY SEWER OVERFLOW REPONSE SOP February 2016 Step 2: Notify Utilities Operations & Maintenance Supervisor of spill and any mitigation activities taken. Step 3: For Category 1 & 2 SSO, notify CalOES (800-852-7550) of spill within two (2) hours of being notified of SSO. Step 4: Utilities Operations & Maintenance Supervisor: Report spill in CIWQS Online SSO Reporting Database. 6 Effective date: SANITARY SEWER OVERFLOW REPONSE SOP February 2016 SSO RESPONSE PLAN Verify CoH’s Note on Service Is there an NO mains are flowing Request that there START SSO? normal is no SSO. YES Is the SSO a Follow the Have you result of a “INDUSTRIAL NO encountered an YES problem in CoH industrial spill? SPILL PLAN” system? Procedure YES NO First responder will identify location of problem structure. After locating problem structure, first responder will initiate additional support needed for: ●Relieving stoppage ASAP Have you Follow the ●Securing area for public protection encountered YES “PRIVATE SSO ●SSO classification (Category 1, 2, or 3) & reporting. private SSO? PLAN” Procedure ●SSO containment ●SSO clean up Establish Containment: (Containment is to be established by responder while additional crew members mobilize, this should be done simultaneously with the above steps to minimize SSO area and total gallons spilled.) ●Protect public with signs, caution tape, barricades, etc. ●Plug or rubber-mat any storm drain inlets or catch basins in the affected area. ●Sand bag or burm any neighboring street gutters to prevent SSO from migrating from the affected area. ●If upon arrival neighboring storm drain have been contaminated by the SSO, plug downstream to prevent further contamination. After containment, call CA Office of Emergency Services (800 852-7550) and if Category 1 or 2 to report spill. Get SSO number at this time. If building is flooded, start clean-up, take pictures and call Sewer Collections Supervisor ASAP. If you haven’t already, Is the SSO a Secure area and After clearing stoppage use appropriate method result of a contact Supervisor and cleaning up area, fill YES to clear stoppage. blockage in the or Manager out Sanitary Sewer Estimate SSO rate and sewer line? immediately Overflow Data form. identify affected areas. NO Use appropriate method to establish bypass. Use CCTV Did SSO: to determine next steps. Substantially endanger human Proceed with rectifying health? or cause and clean up. Result in property damage? or Discharge to drainage channel and/or surface water? or Clean up: Exceed or equal 1000 gals? or Vacuum all solids and liquids resulting Perform Final Volume Estimate: Result in fish kill? or from the SSO and dispose in sanitary Use the appropriate method to NO Enter storm drain and was not sewer system. calculate final SSO volume fully recovered? Clean any contaminated storm drains, Estimate gallons recovered contain and vacuum waters generated Complete and submit applicable in the cleaning process. paperwork to Sewer Collections Estimate clean up water volume Supervisor captured for reporting purposes, Wash down street and manhole. YES Contact Supervisor or Manager Notify property owner. immediately. Sample surface water using sampling procedures to identify sampling points and pull appropriate samples 7 Effective date: SANITARY SEWER OVERFLOW REPONSE SOP February 2016 8 Effective date: SANITARY SEWER OVERFLOW REPONSE SOP February 2016 9 Effective date: SANITARY SEWER OVERFLOW REPONSE SOP February 2016 START Stay clear of hazards. Secure the area from the public. Notify CA Office of Emergency Services (800) 852-7550 Notify City of Hayward Water Pollution Source Control staff. Notify Sewer Collections Supervisor. If necessary, use all available resources to keep spill from entering storm drain system. Before leaving the site, ensure CoH management has been informed of the situation and has started the process of getting the customer to correct the situation. Also ensure that the spill has been contained and is not threatening to enter the storm drain system. 10 Effective date: SANITARY SEWER OVERFLOW REPONSE SOP February 2016 PRIVATE SSO PLAN START Determine the source of the Private SSO. Notify the property owner to fix the problem ASAP. Is the property owner YES available and ready to fix the problem? NO > Notify Water Pollution Source Control Administrator at (510) 881-7960 of the existence of the spill and the fact that it was “Private Lateral SSO”. > Notify Senior Leader or Supervisor of Private Lateral SSO. > Relieve the stoppage. > Clean up the SSO. > Clearly note on paperwork that the SSO is a private lateral. > Record property owner name and contact info.
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